Padlock



Feb. 17, 1931. P. SCZEPCZENSKI PADLOCK Filed May 31, 1929 gwuwntoz P2 l e I 60z6/ 6Z671 5% i Patented Feb. 17, 1931 UNITED srars s PATENT Y Pnnmor Application filed May-31, 1929. Serial N'o. 367,346.

This invention relates to the class of locks and pertainsparticularly to improvements in adlocks -The primary object of the present invention is to generally improve upon the typeof padlocks employing a pivoted shackle member and more particularly toimprove'; upon the structure forming the subjectmatter of 7 my Patent No 1,661,777, dated March 6:, 1928. In my former patent a longitudinally,

fluted key is employed for actuating the shackle secured tumblerof the lock and one of the improved features of the present structure isto provide a keyoperated lock wherein a plurality of guideplates'are'employed through which the lock operating key must pass, which plates engage in slots formed transversely of the edge of the key whenthe same is rotated. By this means the employ-.

ment of an ordinary straight fluted member essary that the combination of apertured through the invention.

- Figure 3; is a guide plates be properly represented in trans verse slots uponthe key before the key can be actuated for the rotation of the lock tumbler.

r 1 Other objects and advantages of the presentv invention will become apparent as a detumbler 8 is provided with a central raised scription-of the same proceeds and the invention will be best understood from aconsideration of the following detailed description taken in connection with the accompanying drawin formind a part of the presentinven-.

as here nafter described.

tion with the understanding, however, that the/invention is not confined to any strict conformity with the showing of the drawing but may be changed or modified so long as such changes ormodifications mark no mate rial departure from "the salient. features of the invention as expressed inthe' appended claims. [In the vdrawing Figure 1 is aflo'ngitudinal sectionaliview padlock embodying the present Figure 2 is a view in bottom plan of "the same.

tially upon the line 3.3 of Figural.

as shown,

sectional'view taken substan-' Figure 5 is an elevational view of-a keyldesigned for use in the lock. V V I i Referring to the drawing in'detail wherevin like numerals of reference indicate corresponding parts throughout'the several views, the numeral 1 ndicates the shell ofthe lock body, the same being-cast inja single piece,

tubular formation having an open end 2 through whichthe work ng parts'of the lock nay be'inserted into the interior thereof.

At the bottom or open end of the shell there is/form'eda pair of lateral ears 3 betweenand being prefer-ablyof-elongated which is pivotally mounted upon a suitable pin 4- one end ofa shackle 5, the other or free end ofw'hich is turned inwardly at substan tially right angles and transversely slotted V upon its underside, as indicated at 6, to ex- ,for plcklng the lock lsprevented, as 1t,1s nectend through theupper end ofthe shell at V the point 7, to bring the slotted portion into position in the interior thereof; YVit-hin the shell at the upper end is a rotatable tumbler 8 the inner end, of whichis formed to provide an arcuate finger-9 adapted, when the tumbleris rotated to slip into the slot Got the shackle. lhe underside of the portion -10 which has formed transversely thereof the crossed key slots 11 into which the forward end of an operating key12 is adapted to position when inserted into thegloclr,

Inserted into the shell 1' is a-fixed'key guide relatively long and having formed in the wall thereof, from the inner end through open but is reduced slightly, as indicated at is atkeyreceiving collar 16,;a portion ofwhich .isreduced, as shown, to snuglyi'fit into the reduced portion 15 of the cylinder, the'larger inner GHdPOItlQD. bearing against the shoul- "der formedinthecylinder attheinnerend of the reducedportionl thereof by I which; means this collar is held in place. [The collar is plate carrying cylinder 13, this cylinderbeing '15, and rotatably arrangedin this outer end lei.

provided with the transverse slot 17 which is formed to snugly receive the longitudinally fluted portion of the key 12.

Within the cylinder13 and bearing against the inner end of the collar 16 is a coil spring 18 and arranged in alternate layers upon the spring 18 are key guide plates 19 and spacing rings 20. Each'of the plates 19 has, at

diametrically opposite points on the peripheral edge, ears 21, which positionin the slots 14 by which means they are prevented from rotating in the cylinder and'each of the plates further has an oval aperture 22 formed. therethrough through which the fluted end of the key 12 passes.

, Maintaining the tumbler 8 1n spacedrelationto the inner end of the cylinder 13 is a relatively heavy coiled spring 23, this spring normally urging the tumbler forwardly in the lock shell. r I

The forward end of the tumbler 8, in ad dition to having the arcuate shackle slot engaging finger 9, has'an open side 24 upon one side of which the finger 9 is placed/while upon ,1, the opposite side an 'arcuatewall 25 is formed which extends a slight distance above the end of the tumbler but which is lower than the finger 9. 7 With this structure, 'wh'en'the shackle is open and the tumbler forcedfor- Wardly against theclosed end of the shell by the spring 23, upon insertion of the'key into the collar 16 and through the aperture guide plates 19 until the forward end of the key positions in one of the transverse slots and upoiithe underside of the tumbler, thetu'inbler may be rotated until the open side.24='

is brought.intoalignnient with the aperture 7 after which the slotted end of the shackle may be extended into the shell. A further rotation of the tumbler in the proper direction will cause the lower wall 25 to ride under the shackle iii the slot 6 forcing thetuinbler down against the spring 23 aiid'bringiiig the higher part of the wallof the finger portion 9 into the slot which action, as will be readily seen, will force the tumbler further down against the tension of the spring 23. In this manner the shackle is engaged by the tumbler and the tumbler is held in tight trio tioiial engagement therewith by the spring therebeneatli.

To'insure the use of the'proper key in the operation of this padlock the'fluted tongue portion thereof is provided at its edges with a series of transverse slots 26, the distancebetween the slots transversely of the key being equal to the length'of the short axis of .the oval apertures 22in the plates 19. 1

The long axis of these apertures is equal to the overall :width oithe fluted port-ion of the key. From this it will be readilyapparent that unless a key 9t the proper width and having the slots 26 properly spaced both longitudinally and transversely etthe fluted portion: is selected itfcan not be iiiserted into the shell and consequently the tumbler 8 cannot be engaged and rotated. Having thus described my invention, What I claiinis t 1. In a padlock, a shell, a shackle pivotally attached to the shell and having a slotted in turned end adapted to extend through the wall thereoi'fa rotatable body within the shell having a portion adapted to engage in said slot, meansfor resiliently forcing the body longitudinallyot the shell against the inserted end of tlie'shackle into the slot therein, and a key receiving structure adjacent the shackle engaging body and formed to engage in certain recesses ofa key when the same is turned therein, said shackle engaging; body 7 being formed for coniiectioiiwith an insert-ed key. v

therein and extending from the inner end thereof, said sleeve being. designed to receive a key in itsother end, a plurality of spaced members within the sleeve each having a pair of diametrically oppositely positioned lugs engaging in said slots and each further having an elliptical aperture therethrough, said members being designed to receive a key having notches therein designed to receive the edges of the apertures when the key s turned to extend transversely thereo'ha rotatable tumbler within the shell formed for engagement in the notch of said shackle, and an expansible spring normally maintaining said tumbler and said members in spaced relation, said tuinbler being formed to receive the inserted end of a key extended through the member's. v

3. A padlock of the character described, comprising an elongated shell having a cylindrical bore therein and having an aperture through the wall thereof atone end of the shell, and" opening into the bore, a shackle pivotally attached tothe shell adjacent the other end and having a transversely slotted intur ed' end adapted to; enter said aperture, a sleeve in said bore remote from said aperture and having a pair of loiigitudinal lylex tending diametrically opposed slots .foi'ined t er and. xte ding, ires; t e inner thereof, said sleevebeing des gned tO'I'GCBlVO V a key in its other end, a plurality of spaced members within the sleeve each having a pair of diametricallyoppositely positioned lugs engaging in said slots and each furtherha ving' an ellipticalaperture"therethrough, said 1 members being designed to receive a key havlng notches therein designed to receive the edges of the apertures when the key is turned to extend transverselv thereof, a rotatable tudinally in the shell for engagement with the inserted end ofsaid shackle, and an ex tension formed upon'said tumbler extending into the lastmentioned spring for maintaining the tumbler in position, said extension being slotted to receive the inserted end of a key extending through the members.

In testimony whereof I hereunto affix my signature.

PETER SGZEPCZENSKI. 

